WAEC - Physics (2003 - No. 30)
A positively charged glass rod is placed by near the cap of a positively charge electroscope. The divergence of the leaf is observed to
decrease
increase
remain the same
increase and collapse immediately
Shpjegimi
One of the uses of the Gold leaf electroscope is to test charges whether the charge is positive or negative. The gold-leaf electroscope tests the sign of the charge of an object. If an unknown charge is brought near to a charged electroscope and the leaf diverges more, the unknown charge is similar to the charge on the electroscope and vice versa.